On Holset turbos are housing sizes stamped inside the exhaust flange?? Is this the same for all Holsets? I have one that is stamped 17 inside the exhaust flange, intake side? Also, This housing is wastegated and has a vacuum actuator facing forward with a small AN fitting. How can I hook this up to make the wastegate work? My old stock 35 got the boost signal from the comressor housing on the turbo.. Last ? where can you find adapters to adapt the larger flange to the stock exhaust manifold? Does anyone have one they are not useing? TIA

 

TTT

 

Sometimes marked.
Try Htturbo.com or Scheid diesel for the adapter.

 

I found a adapter at Ht, But it is spendy. Hoping to find a used one..

 

Does the adapter have to have the divider between the ports??